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The material was rarely used for the columns, as the cast was both stronger under compression and cheaper, so a typical iron frame building in the second half of the 19th century had cast iron columns and wrought iron beams. Columns at the Crystal Palace (1851), as well as short trusses, were made from the cast iron, while longer beams used ...
Cast iron was also taken up by some architects in the early 19th century where smaller supports or larger spans were required (and where wrought iron was too expensive), notably in the Royal Pavilion in Brighton, designed by John Nash and built between 1816 and 1823, where cast iron columns were used within the walls, as well as cast iron beams ...
By the mid 19th century, cast iron columns were common in warehouse and industrial buildings, combined with wrought or cast iron beams, eventually leading to the development of steel-framed skyscrapers. Cast iron was also used sometimes for decorative facades, especially in the United States, and the Soho district of New York has numerous examples.
To reduce the weight these had to support, Bouch used open-lattice iron skeleton piers; each pier had multiple cast-iron columns taking the weight of the bridging girders. Wrought iron horizontal braces and diagonal tiebars linked the columns in each pier to provide rigidity and stability. Original Tay Bridge from the north, c. 1878
They were supported by cast iron columns, erected on top of each other. The lateral thrust of the brick arches was resisted by concealed wrought iron ties between the column tops. The building was 15 bays wide, and the wings six bays wide. The mill is one of the first iron framed buildings.
In 1974 the conservation of the ironworks began. Shortly after statutory protection was provided for various sites in Blaenavon including the ironworks. In 2001, the site underwent a major restoration. The 160-year old cast iron columns at the top of the tower were taken down and the iron frame was recast and painted. [16]
Inside, the church has a flat ceiling with an uninterrupted span of 60 feet (18 m), and galleries supported on cast-iron columns. The interior of the apse is in the form of one half of a circular temple, with six columns, painted to imitate marble, raised on a plinth. [6]
Cast iron is weak against bending, and a shallow frame alone would need either rigid masonry support, or would soon fracture. One of the oldest surviving six-column engines is a small engine of 1820, possibly by Boulton & Watt , preserved at the Birmingham Museum of Science and Industry . [ 2 ]